Salts of A (atomic weight 7), B (atomic weight 27) and C (atomic weigh – InterviewSolution

1.	Salts of A (atomic weight 7), B (atomic weight 27) and C (atomic weight 48) were electrolysed under identical condition using the same quantity of electricity. It was found that when 2.1 g of A was deposited, the eight of B and C deposited were 2.7 and 7.2 g. The valencies of A,B and C are respectively :
Answer» `3,1 and 2` `1,3 and 2` `3,1 and 3` `2,3 and 2` ANSWER :B

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